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, Color photograph, derived from a slide, of the Oregon Trail south of Douglas, Wyoming in Converse..., , This file is derived from a 720 dpi, high-resolution (24-bit color) uncompressed TIFF image, that...,

, Black and white photograph of the Oregon Trail and Power lines in Converse County, Wyoming. Locat..., , This file is derived from a 720 high-resolution (3340 x 2614 ppi, 8-bit grayscale) uncompressed T...,